Degradation of Chlorophenols via Peroxymonosulfate Activation by Fe-Co Bimetallic Single Atom Catalyst

Fe-based single-atom catalysts (Fe-SACs) are able to enhance the Peroxymonosulfate (PMS) activation effectively just as a result of metal active sites that are precisely defined and atomically dispersed. The Fe 2 Co 1 CN catalyst synthesized in this work exhibits excellent catalytic activity toward PMS activation: the Fe 2 Co 1 CN/PMS system achieved nearly 100% 2-chlorophenol (2-CP) removal, a sharp contrast to only ∼1.5% removal by PMS alone. Corresponding, a mineralization rate of 78.3% was attained within 2 hours, coupled with extremely low metal leaching concentrations — evidencing the Fe 2 Co 1 CN catalyst’s superior structural stability and high catalytic efficiency in PMS activation. Together with its non-radical PMS activation mechanism, these merits highlight the catalyst’s potential as an efficient, stable, and selective candidate for practical wastewater treatment applications.